I absolutely agree, and having lived through it, it’s infuriating the way they intentionally exclude/call out kids whose parents haven’t signed them up or who haven’t sold any trash. They’ll send the kids home to sign up 10 email addresses and on the second day they’ll come back with some piece of shit stuffed animal for everybody who did it. A little kid doesn’t understand that the whole thing is a fucking scam. They’re just sitting in school watching the rest of their class play with cool new toys.

Public primary and secondary schools do not typically have stadiums.

Scratch is a simple drag and drop app kids use to learn to code. I’ve seen kids create pretty elaborate games with it. Maybe you could play with that and figure out if your concept is in fact simple enough to create on your own.